/Engine/Source/Runtime/GeometryCore/Public/DynamicMesh/MeshTangents.h
Convenience function to compute tangents from the mesh attribute set's primary UVs and normals
true if tangents were computed, false otherwise
static bool ComputeDefaultOverlayTangents ( [FDynamicMesh3](API\Runtime\GeometryCore\DynamicMesh\FDynamicMesh3) & Mesh )